Free-flying Ground Testbed for Dynamics and Control of Tethered Spacecraft

系留航天器动力学与控制自由飞行地面试验台

• 批准号: 458825-2014
• 负责人: Zhu, ZhengHong
• 金额: $ 10.93万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=542055
• 关键词: Free; flying; Ground; Testbed; Dynamics

The objective of this experimental program is to design and build a free-flying ground testbed capable of testing the dynamic behavior of tethered spacecraft and its response to control actions in an emulated space environment of zero gravity. This highly focused experimental program will lead to validation of the dynamic model and stability control law of tethered spacecraft, tether deployment and recovery technology, and smart structure actuator technology. The dynamics and control theory of tethered spacecraft is very complex mostly due to their multidisciplinary and multiscale nature. Due to the prohibitive cost for validation in space, the proposed ground testbed will provide cost-effective testing facility in an emulated space environment and shed light on the complex issues encountered in the analysis and design of the tethered spacecraft system in order to discover some fundamental issues that may be overlooked by existing theories. The space tether technology has a great potential in space exploration, for instance, the electrodynamic tether for power generation and deorbit of space debris, the creation of artificial gravity in spacecraft by rotation of two tethered spacecraft, the low-flying tethered probe for precision Earth observation, the spacecraft formation flying to achieve missions with smaller spacecraft, and the electronic solar sail for interplanetary exploration. The proposed equipment will train HQP in experimental design, electronic hardware, wireless communication, software programming, data acquisition and processing, computer vision, and dynamics and control of tethered multi-body system and smart structure actuators. These hands-on experiences and practical skills will also make HQP more competitive in job market.

该实验计划的目标是设计和建造一个自由飞行的地面试验台，能够在模拟的零重力空间环境中测试系链航天器的动态行为及其对控制动作的响应。这一高度集中的实验计划将导致对系绳航天器的动力学模型和稳定性控制规律、系绳展开和回收技术以及智能结构执行器技术的验证。绳系航天器的动力学和控制理论非常复杂，这主要是由于其多学科和多尺度的特点。由于在空间进行验证的费用高得令人望而却步，拟议的地面试验台将在模拟的空间环境中提供具有成本效益的测试设施，并阐明系留航天器系统分析和设计中遇到的复杂问题，以便发现一些可能被现有理论忽视的基本问题。空间系绳技术在空间探索方面具有巨大的潜力，例如，用于空间碎片发电和脱轨的电动系绳，通过两个系绳航天器的旋转在航天器中产生人造重力，用于精确地球观测的低空飞行的系绳探测器，与较小的航天器一起飞行以完成任务的航天器编队，以及用于星际探索的电子太阳帆。该设备将在实验设计、电子硬件、无线通信、软件编程、数据采集和处理、计算机视觉以及系泊多体系统和智能结构执行器的动力学和控制方面对HQP进行培训。这些实践经验和实践技能也将使HQP在就业市场上更具竞争力。